Thank you everyone for your replies. I am 99% certain the arrow was not hanging from the neck. I could see the shaft of the arrow hanging from the deer's side. I may be off on the exact location because it was low light, but I am positive it was hanging from the side, not the neck. I have examined the broadhead again and it must have hit something pretty hard as the left blade is broken cleanly about 1/4" from the base. There are a few brown hairs, but a lot of white hairs all over the broadhead and shaft. Will be looking for the deer bright and early in the morn.